1. A study on the duration of strong earthquake ground motion;Trifunac;Bull. Seism. Soc. Amer.,1975
2. A note on the correlation of frequency-dependent duration of strong earthquake ground motion with the Modified Mercalli intensity and the geological conditions at the recording stations;Trifunac;Bull. Seism. Soc. Amer.,1977
3. Duration of strong earthquake shaking;Trifunac;Int. J. Soil Dyn. Earthqu. Eng.,1982
4. Correlations of the frequency dependent duration of strong earthquake ground motion with the magnitude, epicentral distance, and the depth of sediments at the recording site;Westermo,1978
5. Correlations of the frequency dependent duration of strong ground motion with the Modified Mercalli intensity and the depth of sediments at the recording site;Westermo,1979